Marion County, Ohio
Marion County, Ohio, has 65,115 residents (July 2025 estimate). Its county seat is Marion. It uses Eastern Time and covers 404 sq mi (1,046 km²) of land.
- Resident population, July 2025
- 65,115
- Land area
- 404 sq mi (1,046 km²)
- County seat or government
- Marion
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $59,371 ± $4,308
- Median home value
- $156,800 ± $6,246
- Median rent, with utilities
- $864 ± $31
- Homes lived in by their owners
- 67.5% ± 2.1 points
- County type
- County
- Metro or micro area
- Marion, OH micro areaCentral county
- Water area
- 0.35 sq mi (0.91 km²)
- State
- Ohio
- County code (FIPS)
- 39101
- Coordinates (central point)
- 40.588034, -83.168803
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Marion County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 4330253,702 people
- 4483315,892 people
- 4332612,573 people
- 433156,873 people
- 433446,173 people
- 433423,836 people
- 433142,438 people
- 448492,195 people
- 433322,173 people
- 433561,120 people
- 43341953 people
- 43337625 people
14 ZIP Code areas overlap Marion County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Marion County, largest first
- Marion Township43,566 people
- Pleasant Township4,910 people
- Claridon Township2,845 people
- Prospect Township2,143 people
- Montgomery Township2,091 people
- Richland Township1,936 people
- Green Camp Township1,726 people
- Waldo Township1,235 people
- Grand Prairie Township1,051 people
- Big Island Township867 people
- Salt Rock Township865 people
- Grand Township690 people
All 15
- Tully Township581 people
- Bowling Green Township356 people
- Scott Township158 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Ohio, by county
School districts in Marion County, largest first
- Marion City School District28,523 people
- River Valley Local School District17,172 people
- Upper Sandusky Exempted Village School District10,829 people
- Northmor Local School District9,611 people
- Pleasant Local School District8,294 people
- Mount Gilead Exempted Village School District8,279 people
- Elgin Local School District7,033 people
- Cardington-Lincoln Local School District6,399 people
- Ridgedale Local School District4,260 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Marion, Ohio (city)35,669 people
- Prospect, Ohio (village)1,157 people
- La Rue, Ohio (village)725 people
- Green Camp, Ohio (village)437 people
- New Bloomington, Ohio (village)430 people
- Morral, Ohio (village)423 people
- Caledonia, Ohio (village)421 people
- Waldo, Ohio (village)370 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Wyandot County, Ohio19 mi northwest
- Morrow County, Ohio20 mi east
- Crawford County, Ohio22 mi northeast
- Union County, Ohio23 mi southwest
- Delaware County, Ohio23 mi south
- Hardin County, Ohio26 mi west
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
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